Semaphore-signal.



No. 790,011. 7 V PATENTED MAY 16,1905.

A. A- STROM. I SEMAPHORE SIGNAL.

APPLICATION FILED MAR. 6, 1905.

jzvev Z 027 'UNITED STATES Patented'May 16, 1905.

PATE T OFFICE.

AXEL A. STROM, OF CHICAGO, ILLINOIS, .ASSIGNOR TO PETTIBONE, MULLIKEN &COMPANY, OF CHICAGO, ILLINOIS, A CORPORATION OF ILLINOIS.

SEMAPHORE-SIGNAL.

SPECIFICATION formingpart of Letters Patent No. 790,011, dated May 16,1905.

' Application filed March 6,1905, erial No. 248,470.

To all whom it may concern.-

Be it known that I, AXEL A. STRoM, a citizen of the United States,residing at Chicago, in the county of Cook and State of Illinois, haveinvented a new and useful Improvement in Semaphore-Signals, of which thefollowing is a specification.

' My invention relatesto an improvement in monly used for inclosing themand which shall be very simple and inexpensive to manufacture anddurable without liability to get out of order.

confined to a so-called high semaphore nor to a switch-stand from whichto operate the spindle which actuates the semaphore-arm, although suchembodiment of my invention is illustrated'in the accompanying drawings,in which Figure 1 shows by a broken View in elevation a high semaphoreembodying my improvement. Fig. 2 is an enlarged broken view of the upperportion of the apparatus, presenting the side thereof opposite thatpresented by Fig. 1; and Fig. 3 is an enlarged perspective view of apreferred form of the hinging connection between the semaphorearm andits vertical actuating-shaft.

At A is represented a switch-stand of ordinary construction involving asuitable frame having journaled in it a vertical shaft B to be connectedat its lower crank end in the usual way with a railway-switch (notshown) adapted to be thrown through the medium of a lever-handle Afulcrumed on the stand and engaging the vertical shaft for turning it.The shaft B reaches to any desired height and car- My improvedconstruction is not necessarily ries on its upper end the usual supportC for a signal-lamp. (Not shown.) On the shaft B near its upper end isprovided a sleeve a, in which the shaft turns, the sleeve having an arma projecting laterally from it and terminating in a depending socket aor head and in an upwardly projecting bearing a in which is journaled ashaft 6. On one end of the shaft or journal 5 are secured thesemaphorearm D-and the weighted arm D for balanc ing it, and on theopposite end thereof a collar 0 is secured by a pin (5 passing throughthe journal and collar, the latter terminating in a socket c. A ladder Erises inclinedly from a socket-bearing E on the head-blocks, one ofwhich is represented at F, upon which the switch-stand is supported andwhich cross a tie F, from which stay-rods rise (one such stay-rod beingshown at F and are connected with the ladder to brace it, and the upperend of the ladder enters the socket a to support it and the partscarried by it. In the socket 0 is journaled a stem e,'terminating at itslower projecting end in a horizontally-perforated head e. On the shaftB, below the sleeve (0, is fastened to turnwith the shaft a collar f,having an arm f extending laterally from it, and into the endof this armis screwed the stem g of a vertically-perforated head 9.

The semaphore-arm and shaft B are connected at the heads 6 and g by ahinge connection to cause turning of the shaft to raise and lower thearm. The device shown for hinging the heads together is represented mostclearly in Fig. 3 and comprises two connected yokes h and 2', the armsof the former terminating in horizontally and coincidently perforatedeyes it h and those of the latter terminating in vertically andcoincidently perforated eyes '6. The yoke 7b embraces the head 6 and ispivotally connected therewith by a pin If passing through the head andeyes It, and the yokez' embraces the head 9 and is pivotally connectedtherewith by a pin 71 passing through it and the eyes 11. By the hingeconstruction thus described when the shaft B is rotated to turn the armf in the direction away from the socket-head a the yoke device will pullupon the head 6, with the eifect of turning the journal I) in itsbearing to lower the semaphore-arm, and the latter will be raised inturning the shaftB in the opposite direction by causing the head 9 topress the yoke device against the head a and turn the journal 6accordingly in its bearing a While the yoke device shown and describedaffords the best means known to me for producing a positive and directhinge connection between the semaphore-arm and its operating shaft, itmay be modified in matters of detail and in character without departurefrom my invention.

An important feature of my improvement consists in the adjustibility ofthe bearing g, whereby it may by screwing its stem g in and out of thearm f be shortened and lengthened to vary its leverage on the yokedevice and accordingly vary the throw of the semaphore-arm, which isrequired to extend horizontally in its danger position, but may in itslowered position extend vertically or at any angle to the vertical,according to difi erence in preference among users. By rendering thehinge connection thus adjustable it enables in installing thesignaldevice setting the arm to occupy a horizontal position when raisedand to extend to any desired angle when lowered.

What I claim as new, and desire to secure by Letters Patent, is

1. In a semaphore-signal, the combination of a vertical rotary shaft, ahorizontal journal carrying a semaphore-arm, arms extending laterallyrespectively from said shaft and journal, and a link connecting saidarms.

2. In a semaphore-signal, the combination of a vertical rotary shaft, ahorizontal rotary shaft, a semaphore-arm secured on said horizontalshaft, an arm extending laterally from each of said shafts, and a linkconnecting said arms.

3. In a semaphore-signal, the combination of a vertical rotary shaft, ahorizontal rotary shaft carrying a semaphore-arm, an arm extendinglaterally from each of said shafts, and a link connected by a horizontalpivot with one shaft-arm and by a vertical pivot with the othershaft-arm.

4. In a semaphore-signal, the combination of a vertical rotary shaft, asemaphore-arm, and a hinge connection between them operating to raiseand lower the arm by turning the shaft and adjustable to vary the throwof said arm.

5. In a semaphore-signal, the combination of a vertical rotary shaft, ahorizontal journal carrying a semaphore-arm arms extending laterallyrespectively from said shaft and journal, and a link connecting saidarms and having an adjustable screw connection with one thereof.

6. In a semaphore-signal, the combination of a vertical rotary shaft, aladder, a semaphore-arm, a sleeve on said shaft provided with a bearingon which said arm is journaled and a head to which said ladder isfastened, and a hinge connection between said shaft and the journal ofsaid arm operating to turn said journal to raise and lower thesemaphore-arm by turning said shaft.

7. In a semaphore-signal, theconibination of a vertical rotary shaft, aladder, a semaphore-arm, a sleeve on said shaft provided with a bearingon which said arm is journaled and a socket-head to which said ladder isfastened, a head connected with the journal-shaft of the semaphore-arm,a collar secured on said vertical shaft and provided with a head, and aconnection extending between and pivotally fastened to said heads,operating to raise and lower said arm by turning said vertical shaft.

8. In a semaphore-signal, the combination of a vertical rotary shaft, aladder, a sleeve on said shaft provided with a journal-bearing and asocket-head to which said ladder is fastened, a semaphore-arm having ajournal supported in said bearing, a collar fastened on said journal andterminating in a socket, a stern in said socket terminating in a head, acollar on said shaft provided with a head, and a yoke device terminatingat each end in eyes pivotally connected, respectively, with said heads,for the purpose set forth.

9. In combination, a switch-stand having a vertical rotary shaftsurrounded by a sleeve provided with a journal-bearing and a socket andcarrying a collar provided with a head, a weight-balanced semaphore-armon a jonrnal working in said bearing, a ladder with which said socket isconnected, a collar secured on said journal and provided with a socket,a stem in said last-named socket terminating in a head, and a yokedevice terminating at each end in eyes pivotally connected,respectively, with said heads, for the purpose set forth.

AXEL A. STROM.

In presence of M. S. MACKENZIE, J. H. LANDEs.

